Label printer

1. A label printer comprising: an extraction unit configured to extract label information from a recording medium image file which stores data to be written to a recording surface of a recording medium and the label information to be printed on a label surface of the recording medium; a label information printing unit configured to print the extracted label information on the label surface of the recording medium; a file writing unit configured to write the recording medium image file to the recording surface of the recording medium; and a layout information storing unit storing predetermined layout information, wherein it is determined whether the extracted label information includes layout information and contents information, wherein when the extracted label information includes the layout information, the contents information is incorporated into the layout information, and the label information printing unit prints the contents information on the label surface in a layout indicated by the layout information, and wherein when the extracted label information does not include the layout information, the contents information is incorporated into the predetermined layout information stored in the layout information storing unit, and the label information printing unit prints the contents information on the label surface in a layout indicated by the predetermined layout information.

2. The label printer according to claim 1 , wherein the contents information includes a recording date and time, a JOB number, and recording medium preparing information of a disc ID.

3. The label printer according to claim 1 , wherein the label information includes the layout information and data designating information, and wherein the label printer extracts specific data from the data on the basis of the data designating information and incorporates the specific data into the layout information to print the resultant information.

4. The label printer according to claim 1 , further comprising: a data erasing unit configured to erase data from the recording medium when the recording medium is rewritable with reference to the recording surface of the recording medium; and a label information erasing unit configured to receive a report, which indicates that the recording medium is rewritable, from the data erasing unit, and to erase the label information from the label surface of the recording medium.

5. The label printer according to claim 1 , wherein the file writing unit separates the label information from the recording medium image file, and the file writing unit writes the recording medium image file, from which the label information is separated, to the recording surface of the recording medium.

6. A method of processing label information using a label printer, the method comprising: extracting the label information from a recording medium image file which stores data to be written to a recording surface of a recording medium and the label information to be printed on a label surface of the recording medium; and in response to only an instruction for writing data from a user, printing the extracted label information on the label surface of the recording medium, and writing the recording medium image file to the recording surface of the recording medium; determining whether the extracted label information includes layout information and contents information; when the extracted label information includes the layout information, incorporating the contents information into the layout information, and printing the contents information on the label surface in a layout indicated by the layout information; and when the extracted label information does not include the layout information, incorporating the contents information into predetermined layout information stored in a layout information storing unit provided in the label printer, and printing the contents information on the label surface in a layout indicated by the predetermined layout information.